I'm trying to collate some good tools and information for those who are interested in the "Jonas Method" or Moon Phase fertility. Please bear with me as I'm learning all about this myself.

Firstly, some information about this - what it is.

The moon can trigger ovulation and bring on fertililty at any time during the menstrual cycle - including before, during and just after your period. This is called the natural lunar fertile phase.

read more on this site
www.fertilemoon.wordpress.com

So how do we calculate it?

Essentially, what you need to know is the phase angle - ie the number of degrees the moon is ahead of the sun (as viewed from the Earth) - at the date and time you were born, and then the date and time that same phase angle occurs every month throughout your reproductive life. There are different ways to calculate your personal lunar phase angle to find your lunar fertile time.

Step 1: First work out your personal lunar phase angle.

You will need to use some tools to do this:
http://lunarium.co.uk/jonas.php (an easy-to-use lunar conception calculator and baby gender predictor)
http://www.astro.com/cgi/genchart.cgi?&lang=&gm=a2 (a lunar conception calculator with a complex output with charts [select "Lunar Phases Fertility Calendar"])

Step 2: Charting your Ovulation Cycle
If you’re using the method EITHER to avoid conceiving OR alternatively you want to conceive but are not concerned about the gender of the child, you’ll also need to calculate your fertile days on the ovulation cycle.

http://www.fertilityfriend.com/ is a community site with free interactive online fertility charting for the ovulation cycle.

Once you’ve worked out the dates for your personal lunar phase cycle, the information from this site should help you chart both cycles and help you to see how the two cycles compare. All you’ll need to buy is a cheap fertility thermometer or alternatively using the Billings “Ovulation” Method (to test your vaginal mucus for signs of fertility). You can also combine the lunar phase cycle calculations with the temperature and mucus methods (Sympto-Thermal Method).

There is a temperature charting tool on Bub Club under Tools menu.

Books:

There are some good books out there:

* The Reluctant Hypothesis - Kevin Allen
* The First Breath Fertility Kit - Nancy Bolam
* Cosmbiological Birth Control - Shalila Sharamon & Bodo J. Baginski
* The Lunar Cycle - Francesca Naish
* Your Fertile Hours - Emily Faugno
* Astrology of Childbirth - Doris Chase Doane
* The Natural Birth Control Book - Art Rosenblum
* Astrological Birth Control - Sheila Ostrander & Lynn Schroeder
* The Management of Conception Through Astrology - Kirsten Tingstad
* A Key to Stonehenge - Robin Heath

And finally, some discussion - please feel free to comment in this topic about your experiences with this method.